SYSTEM DIAGRAM 
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Air Conditioning System(for Gasoline Model): Blower Motor Circuit
DESCRIPTION The blower motor with fan sub-assembly is operated by signals from the air conditioning amplifier assembly. Blower motor speed signals are transmitted in accordance with changes in the duty ratio. If the airflow volume is low or the blower speed cannot be changed, the following factors m ...
